A 36-hour bandh against the proposed 11,200-MW Siang Upper Multipurpose Project crippled normal life and shut businesses in Arunachal's Upper Siang district.
Indigenous groups demanded an immediate halt to dam pre-feasibility surveys, withdrawal of security forces, and the release of detained anti-dam activists.
Protesters warned of intensified agitation over concerns regarding large-scale displacement and severe ecological impact in the Siang Valley.